Related Rates help to determine the rate of increase or decrease in a variable of interest.

To solve Related Rate problems follow these steps:
1) Understand the Problem
2) Develop a mathematical model of the problem
3) Write an equation relating the variable whose rate of change you seek with the variable(s) whose rate of change you know.
4)Differentiate both sides of the equation implicitly with respect to time t.
5) Substitute values for any quantities that depend on time.
6) Interpret the solution.

Related Rates example